zhèngshì sònglǐ huò xuǎn hàomǎ shí, zhīdào zhèxiē xíguàn yǒu bāngzhù, dàn yě búbì guòdù jǐnzhāng

正式送礼或选号码时，知道这些习惯有帮助，但也不必过度紧张。

Knowing these customs is helpful when giving formal gifts or choosing numbers, but there's no need to be overly anxious.